#include<iostream>
#include<stdio.h>
#include<unistd.h>
#include<string.h>
using namespace std;

int main()
{
    printf("stdout:printf\n");
    fprintf(stdout,"stdout:fprintf\n");
    const char* arr="operator system:write\n";
    write(1,arr,strlen(arr));

    fork();

    return 0;
}
